EP0149225B1 - Dispositif pour la compensation de fluctuations de pression et de flux dans des systèmes d'alimentation en combustible pour turbines à gaz - Google Patents

Dispositif pour la compensation de fluctuations de pression et de flux dans des systèmes d'alimentation en combustible pour turbines à gaz Download PDF

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Publication number
EP0149225B1
EP0149225B1 EP84116186A EP84116186A EP0149225B1 EP 0149225 B1 EP0149225 B1 EP 0149225B1 EP 84116186 A EP84116186 A EP 84116186A EP 84116186 A EP84116186 A EP 84116186A EP 0149225 B1 EP0149225 B1 EP 0149225B1
Authority
EP
European Patent Office
Prior art keywords
valve
housing
pressure
fuel
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP84116186A
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German (de)
English (en)
Other versions
EP0149225A2 (fr
EP0149225A3 (en
Inventor
Wolf-D. Dipl.-Ing. Eder (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0149225A2 publication Critical patent/EP0149225A2/fr
Publication of EP0149225A3 publication Critical patent/EP0149225A3/de
Application granted granted Critical
Publication of EP0149225B1 publication Critical patent/EP0149225B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/22—Fuel supply systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7777—Both valves spring biased
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86035—Combined with fluid receiver
    • Y10T137/86043—Reserve or surge receiver

Definitions

  • Fuel supply systems e.g. of jet engines, in particular those with afterburning, have so-called "pressure accumulators" in the vicinity of the to ensure the required amount of fuel when entering the afterburner (it is needed briefly, ⁇ 1 second, a quantity of several liters, approx. 5 1)
  • Engine on among other things in view of a relatively short-term, high fuel requirement required when the afterburning is switched on, to prevent a disruptive pressure drop in the fuel supply system.
  • a rubber bubble in the pressure accumulator which e.g. can be filled with nitrogen, the aforementioned amount of fuel presses into the system when the pressure in the fuel line drops. As soon as the fuel system has recovered by accelerating the fuel column in the supply lines, this pressure accumulator fills up again.
  • the pressure accumulator picks up pressure.
  • the supply pump typically: 0.1 bar to 0.3 bar.
  • the bubble in the pressure accumulator reacts to these pressure fluctuations with corresponding volume changes, i.e. small amounts of fuel are constantly moved back and forth in the fuel supply system and recorded and processed together with the amount actually flowing to the engine.
  • the superimposition simulates flow fluctuations and measurement errors in the flow measuring system.
  • a fuel supply system for aircraft engines which, in the event of failure of the normal pump-fed fuel supply from a tank to the engine, is intended to ensure the sole supply of fuel via an accumulator or fuel pressure accumulator.
  • Compressed air control is provided for the sole accumulative fuel supply, by way of e.g. Membrane-like piston valve, which connects the accumulator to the delivery pressure of a compressed air source which is always present at the valve only when the fuel pressure falls below a predetermined fuel pressure and the piston is lifted off the valve seat surface.
  • the invention has for its object to provide a device for compensating for pressure and flow fluctuations in a fuel supply system of gas turbines, in particular jet engines, with occasional supply of fuel injectors by pump or pressure storage promotion so that the pressure accumulator from the pump or engine-related relatively small pressure fluctuations remains unaffected.
  • valve in the shut-off position does not react to the relatively small changes in the system, and thus the differential pressure, the pretended flow fluctuations and measurement errors mentioned can be eliminated in a relatively simple manner.
  • differential pressure-controlled valve can also be created, which can either be shut off at low differential pressures or can be flooded in one (storage tank filling) or other flow direction (storage tank emptying).
  • the individual valve elements or valves as well as all essential valve components include can be assembled and disassembled in a maintenance-friendly manner by means of a partially disassembled and quickly interlocking valve housing structure.
  • Fig. 1 explains the device for compensation tion of pressure and flow fluctuations in an afterburner fuel supply system of a turbine jet engine, wherein a fuel pump 2 sucking the fuel from a tank 1 supplies the fuel via a supply line 3 to the fuel injection means (injection ring 4) of the afterburner 5.
  • the supply line 3 communicates via a line connection 6 with a pressure accumulator 8 containing a nitrogen bubble 7.
  • a valve 9, shown schematically in FIG. 1 and detailed within the scope of FIGS. 2 and 3, is in the line connection 6 - between the pressure accumulator 8 and the fuel supply line 3 - Switched and working automatically depending on the differential pressure between the delivery pressure of the accumulator on one side and the pump delivery pressure on the other side.
  • the fuel supply line 3 also has a flow rate measuring device 10 connected downstream of the tank pump 2 and a pressure control valve 11 connected upstream of the fuel injection means (injection ring 4), which is also referred to in technical terminology as a so-called "dome pressure reducer".
  • valve 9 of the device should relieve the pressure accumulator 8 or its nitrogen-filled rubber bladder 7 from the pressure fluctuations of approximately 0.1 to 0.3 bar mentioned in the supply system, ie the pressure accumulator 8 is decoupled from the fuel pump supply for as long as this as long as the valve opening pressure is greater than the pressure fluctuations upstream of this valve 9.
  • the valve 9 consists of two mutually connected valve members 12, 13 which are loaded in opposite directions by compression springs 20, 22 and with which it can be operated either with simultaneous joint valve member adjustment, e.g. responsive to a given accumulator discharge or discharge pressure, in one direction (discharge direction A) or, by way of only one, e.g. to a predetermined filling pressure responsive valve member 13 in the opposite (filling direction B) can be flowed through.
  • the one valve member 12 has a shaft 15, which is axially displaceably guided centrally within the valve housing 14, together with the valve seat plate 16, which are provided with a plurality of openings 17 forming a common total flow cross-section and also along their outer radial wall area on a collar 18 which projects radially symmetrically against the housing interior to provide a seal System can be brought (valve shut-off or storage filling phase).
  • the other valve member 13 On an extension of the shaft 15 of one valve member 12 projecting over the valve seat plate 16 in the axial direction, the other valve member 13 is arranged axially displaceably, which has a seat plate 19 with which the openings 17 of the adjacent valve seat plate 16 can be closed in the valve shut-off or storage drain phase, on the other hand for the purpose Memory fill are exposed.
  • valve shut-off position the valve flow cross-section required for the emptying of the accumulator is thus increasingly opened due to the lifting of the valve seat plate 16 from the collar 18, the openings 17 remaining closed, i.e. So both valve members 12, 13 are simultaneously moved together against the bias of one compression spring 20.
  • the compression spring 20 of the one valve member 12 is supported on its seat plate rear wall on one side and on a disk-like section 21 fixed to the housing on the other side.
  • the compression spring 22 of the other valve member 13 is supported on the one hand on the pressure plate rear wall thereof and on the other hand on a spring stop 23 coupled to the valve stem extension of the one valve member 12.
  • the valve according to FIG. 2 also provides a further disk-like section 24 fixed to the housing, which is designed with the remaining disk-like section 21 fixed to the housing as an axial guide for the valve stem 15 or its extension.
  • the extension part of the valve stem 15 on the right-hand side from the spring stop 23 is guided axially displaceably via a bushing 25 in the disk-like section 24 in question.
  • the two aforementioned disk-like sections 21, 24 are each constituents of disk bodies 25, 26 which penetrate the valve housing 14 in the transverse direction, which are recessed for valve flow and are fixed or clampable in the area of their associated outer edges on the valve housing 14.
  • FIG. 3 essentially embodies, compared to FIG. 2, a valve modification such that the respective compression spring preload should be adjustable according to the operating conditions.
  • an adapter sleeve 27 is to be screwed onto the valve stem 15 of the one valve member 12 on one side and a bushing 28 is to be placed on the other side containing the valve stem extension.
  • Clamping sleeve 27 and bushing 28 should also be designed for one-sided support of the relevant compression spring 20 or 22 and for valve axial guidance; the preload of the one compression spring 22 can be corrected by means of a nut 29 screwed onto the socket-side extension of the valve stem 15, and the preload of the other compression spring 20 can be corrected by means of the clamping sleeve 27, after a nut 30 previously screwed onto the rest of the valve stem end has been loosened for the latter case is.
  • the collar 18 projecting radially into the housing interior can be part of an annular housing insert 31 which is located between a housing-side spacer sleeve 32 on one side and the outer circumferential wall of a disk body 26 on the other side on the valve housing 14 can be determined.
  • the other disk body 25 can be fixed between the remaining free end of the spacer sleeve 32 and an adjacent end face of a detachable housing structural component 33.
  • the collar 18 of the annular insert 31 can be provided on the side facing the valve seat plate 16 with a soft-elastic sealing sleeve 34.
  • This sealing sleeve 34 can be designed as an interchangeable component or be part of the annular insert 31 from the outset, or could e.g. be generated by spraying.
  • the valve is comparatively simple to assemble and disassemble; after the housing structural component 33 has been released, the components 25, 32, 31, 26 - from the right to the left - slightly removed together with the valve members 12 and 13 from the valve housing 14 or reinstalled in reverse order - from the left to the right.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Check Valves (AREA)
  • Pipeline Systems (AREA)

Claims (8)

1. Dispositif pour la compensation de fluctuations de pression et de débit dans des installations d'alimentation en carburant pour turbines à gaz, en particulier pour turboréacteurs à gaz, comportant une conduite d'alimentation (3) menant au moyen de refoulement par pompe du carburant à des moyens d'injection de carburant (4), conduite à laquelle est raccordé un accumulateur de pression (8), une soupape (9), actionnée par la différence de pression entre pression de l'accumulateur et pression de refoulement, étant mise en circuit dans une liaison de conduite (6) située entre accumulateur et conduite d'alimentation (3), la soupape (9) commandant le remplissage en carburant ou une sortie de carburant de l'accumulateur de pression (8) et présentant deux organes de soupape (12, 13) disposés centralement dans un carter de soupape (14), sollicités par des ressorts de compression (20, 22) respectivement en sens opposés et contenant chacun une plaque de siège (16, 19), un des organes de soupape (12) étant pourvu d'une tige (15) guidée pour se déplacer axialement sur laquelle est disposé l'autre organe de soupape (13) avec déplacement possible dans l'axe, et comportant une collerette (18) faisant saillie radialement du côté intérieur du carter, qui forme une butée d'isolation vis-à-vis de la plaque de siège (16) de l'organe de soupape (12) qui présente des orifices de passage (17) qui, en formant une section transversalé d'écoulement de soupape sollicitée d'un côté de la soupape, sont soit dégagés de la plaque de siège (19) de l'autre organe de soupape (13), en vue du remplissage de l'accumulateur, soit obturés - près de la position de repos - lorsque la plaque de siège (16) de l'un des organes de soupape (12) forme, du fait du soulèvement au-dessus de la collerette (18) une section transversale d'écoulement de la soupape qui est sollicitée depuis l'autre côté de la soupape, en vue du vidage de l'accumulateur.
2. Dispositif selon la revendication 1, caractérisé en ce que, dans la soupape (9), le ressort de compression (20) de l'organe de soupape (12) s'appuie essentiellement sur sa paroi arrière de plaque de siège d'un côté ainsi que, de l'autre côté, sur une partie (21) en forme de disque fixe sur le carter.
3. Dispositif selon la revendication 1 et 2, caractérisé en ce que, dans la soupape (9), le ressort de compression (22) de l'autre organe de soupape (13) s'appuie d'un côté essentiellement sur sa paroi arrière de plaque de pression et, de l'autre côté, sur une butée de ressort (23) accouplée à un prolongement de tige de soupape de l'organe de soupape (12).
4. Dispositif selon les revendications 1 à 3, caractérisé en ce que la soupape (9) présente une autre partie (24) en forme de disque, fixe sur le carter, qui est réalisée, avec la partie (21) en forme de disque et fixe sur le carter, sous forme de guidage axial de la tige de soupape appartenant à l'organe de soupape (12) ou à son prolongement.
5. Dispositif selon les revendications 1 à 4, caractérisé en ce que, dans la soupape (9), les deux parties (21, 24) en forme de disque font chacune partie de corps de disque (25, 26) traversant le carter de soupape (14) dans le sens transversal, évidées en vue de laisser passage à l'écoulement dans la soupape et fixées sur le carter de soupape (14) dans la zone des bords extérieurs.
6. Dispositif selon les revendications 1 à 5, caractérisé en ce que, dans la soupape (9), chaque précontrainte respective des ressorts de compression est réglable en fonction des conditions opératoires.
7. Dispositif selon la revendication 7, caractérisé en ce que, sur la tige de soupape (15) de l'organe de soupape (12), une douille de serrage (27) est vissée d'un côté et une douille (28) est appliquée de l'autre, côté, côté contenant le prolongement de la tige de soupape, dispositif dans lequel la douille de serrage (27) et la douille (28) servent à constituer un appui, chaque fois sur un côté, des ressorts de compression (20, 22), ainsi qu'au guidage axial de la soupape, et dans lequel la précontrainte du ressort de compression (22) est susceptible d'être corrigée au moyen d'un écrou (29) vissé sur le prolongement, côté douille, de la tige de soupape, et la précontrainte de l'autre ressort de compression (20) au moyen de la douille de serrage (27), lorsqu'on a desserré un écrou (30) vissé sur le restant de l'extrémité de tige de soupape.
8. Dispositif selon les revendications 1 à 7, caractérisé en ce que, dans la soupape (9), la collerette (18) faisant saillie radialement à l'intérieur du carter est une partie d'une garniture de carter (31) annulaire, qui est fixée sur le carter, entre une douille d'écartement (32) située côté carter, d'un côté, et la paroi circonférentielle extérieure du corps de disque (26), de l'autre côté, et dispositif dans lequel l'autre corps de disque (25) est fixé entre l'extrémité restante de la douille d'écartement (32) et une surface frontale adjacente d'un élément de construction (33) démontable de la structure du carter.
EP84116186A 1984-01-17 1984-12-22 Dispositif pour la compensation de fluctuations de pression et de flux dans des systèmes d'alimentation en combustible pour turbines à gaz Expired - Lifetime EP0149225B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3401397A DE3401397C2 (de) 1984-01-17 1984-01-17 Einrichtung zur Kompensation von Druck- und Durchflußschwankungen in Flüssigkeitsversorgungsanlagen von Maschinen, insbesondere Brennstoffversorgungsanlagen von Gasturbinentriebwerken
DE3401397 1984-01-17

Publications (3)

Publication Number Publication Date
EP0149225A2 EP0149225A2 (fr) 1985-07-24
EP0149225A3 EP0149225A3 (en) 1985-08-07
EP0149225B1 true EP0149225B1 (fr) 1990-07-25

Family

ID=6225141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84116186A Expired - Lifetime EP0149225B1 (fr) 1984-01-17 1984-12-22 Dispositif pour la compensation de fluctuations de pression et de flux dans des systèmes d'alimentation en combustible pour turbines à gaz

Country Status (4)

Country Link
US (1) US4612766A (fr)
EP (1) EP0149225B1 (fr)
JP (1) JPS60169000A (fr)
DE (1) DE3401397C2 (fr)

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US6477268B1 (en) * 1998-11-17 2002-11-05 Industrial Technology Research Institute Producing transitions between vistas
US6494609B1 (en) * 2001-07-16 2002-12-17 United States Gypsum Company Slurry mixer outlet
US7718019B2 (en) * 2005-04-27 2010-05-18 United States Gypsum Company Methods of and systems for preparing a heat resistant accelerant slurry and adding the accelerant slurry to a post-mixer aqueous dispersion of calcined gypsum
US8016960B2 (en) 2005-04-27 2011-09-13 United States Gypsum Company Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum
US20060243171A1 (en) * 2005-04-27 2006-11-02 United States Gypsum Company Wet gypsum accelerator and methods, composition, and product relating thereto
US8206131B2 (en) * 2007-10-12 2012-06-26 Nippon Soken, Inc. Fuel pump
CN102562362A (zh) * 2011-11-18 2012-07-11 南京理工大学 一种高频电磁阀式脉冲爆震发动机供油装置
CA2870757C (fr) 2012-04-27 2017-03-07 General Electric Company Systemes et procedes permettant d'empecher une fuite de combustible dans un moteur de turbine a gaz
CN105605033B (zh) * 2014-11-24 2018-05-01 徐工集团工程机械股份有限公司 自给式压力补偿系统及其压力监控方法
US10537863B2 (en) 2015-12-31 2020-01-21 United States Gypsum Company Constrictor valve with webbing, cementitious slurry mixing and dispensing assembly, and method for making cementitious product
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Also Published As

Publication number Publication date
EP0149225A2 (fr) 1985-07-24
EP0149225A3 (en) 1985-08-07
DE3401397C2 (de) 1986-09-11
JPS60169000A (ja) 1985-09-02
DE3401397A1 (de) 1985-07-25
US4612766A (en) 1986-09-23

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